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<div class="title">qwt_magnifier.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_magnifier.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_math.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;qevent.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qwidget.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">class </span>QwtMagnifier::PrivateData</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;{</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    PrivateData()</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;        : <a class="code" href="class_qwt_magnifier.html#a64f88257b2432d21f5fc62e7fd9c0fde">isEnabled</a>( false )</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        , <a class="code" href="class_qwt_magnifier.html#a9bf2df5d0a0087e967c8674618466da2">wheelFactor</a>( 0.9 )</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;        , <a class="code" href="class_qwt_magnifier.html#a479fca5465debe4c4d538bd350a7f182">wheelModifiers</a>( Qt::NoModifier )</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;        , <a class="code" href="class_qwt_magnifier.html#a282d3c040136ad97586ac73c37151508">mouseFactor</a>( 0.95 )</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;        , mouseButton( Qt::RightButton )</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        , mouseButtonModifiers( Qt::NoModifier )</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        , <a class="code" href="class_qwt_magnifier.html#ae29e88684303d3bf587e9b5338267111">keyFactor</a>( 0.9 )</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;        , zoomInKey( Qt::Key_Plus )</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;        , zoomInKeyModifiers( Qt::NoModifier )</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;        , zoomOutKey( Qt::Key_Minus )</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;        , zoomOutKeyModifiers( Qt::NoModifier )</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;        , mousePressed( false )</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        , hasMouseTracking( false )</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    {</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    }</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordtype">bool</span> <a class="code" href="class_qwt_magnifier.html#a64f88257b2432d21f5fc62e7fd9c0fde">isEnabled</a>;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#a9bf2df5d0a0087e967c8674618466da2">wheelFactor</a>;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    Qt::KeyboardModifiers <a class="code" href="class_qwt_magnifier.html#a479fca5465debe4c4d538bd350a7f182">wheelModifiers</a>;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#a282d3c040136ad97586ac73c37151508">mouseFactor</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160; </div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    Qt::MouseButton mouseButton;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    Qt::KeyboardModifiers mouseButtonModifiers;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#ae29e88684303d3bf587e9b5338267111">keyFactor</a>;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="keywordtype">int</span> zoomInKey;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    Qt::KeyboardModifiers zoomInKeyModifiers;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keywordtype">int</span> zoomOutKey;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    Qt::KeyboardModifiers zoomOutKeyModifiers;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordtype">bool</span> mousePressed;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keywordtype">bool</span> hasMouseTracking;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    QPoint mousePos;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;};</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#aa11b927c72e0421570a137f0fa1cfb7b">   63</a></span>&#160;<a class="code" href="class_qwt_magnifier.html#aa11b927c72e0421570a137f0fa1cfb7b">QwtMagnifier::QwtMagnifier</a>( QWidget* parent )</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    : QObject( parent )</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;{</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    m_data = <span class="keyword">new</span> PrivateData();</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160; </div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keywordflow">if</span> ( parent )</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    {</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        <span class="keywordflow">if</span> ( parent-&gt;focusPolicy() == Qt::NoFocus )</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;            parent-&gt;setFocusPolicy( Qt::WheelFocus );</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    }</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    <a class="code" href="class_qwt_magnifier.html#a03d892c58039fc864a452b7c636a1df7">setEnabled</a>( <span class="keyword">true</span> );</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;}</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ac18a7858407951a335399ee6969a50da">   78</a></span>&#160;<a class="code" href="class_qwt_magnifier.html#ac18a7858407951a335399ee6969a50da">QwtMagnifier::~QwtMagnifier</a>()</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;{</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keyword">delete</span> m_data;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;}</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160; </div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a03d892c58039fc864a452b7c636a1df7">   92</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a03d892c58039fc864a452b7c636a1df7">QwtMagnifier::setEnabled</a>( <span class="keywordtype">bool</span> on )</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;{</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;isEnabled != on )</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    {</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        m_data-&gt;isEnabled = on;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        QObject* o = parent();</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        <span class="keywordflow">if</span> ( o )</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            <span class="keywordflow">if</span> ( m_data-&gt;isEnabled )</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                o-&gt;installEventFilter( <span class="keyword">this</span> );</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                o-&gt;removeEventFilter( <span class="keyword">this</span> );</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        }</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;}</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a64f88257b2432d21f5fc62e7fd9c0fde">  113</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_qwt_magnifier.html#a64f88257b2432d21f5fc62e7fd9c0fde">QwtMagnifier::isEnabled</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;isEnabled;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;}</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ae3a33ab8776ed2122fecc821a32bb36a">  134</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#ae3a33ab8776ed2122fecc821a32bb36a">QwtMagnifier::setWheelFactor</a>( <span class="keywordtype">double</span> factor )</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;{</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    m_data-&gt;wheelFactor = factor;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;}</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160; </div>
<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a9bf2df5d0a0087e967c8674618466da2">  143</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#a9bf2df5d0a0087e967c8674618466da2">QwtMagnifier::wheelFactor</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;wheelFactor;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;}</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#aadfc853d8619b43b21564d8d5fe50093">  155</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#aadfc853d8619b43b21564d8d5fe50093">QwtMagnifier::setWheelModifiers</a>( Qt::KeyboardModifiers modifiers )</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;{</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    m_data-&gt;wheelModifiers = modifiers;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;}</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160; </div>
<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a479fca5465debe4c4d538bd350a7f182">  164</a></span>&#160;Qt::KeyboardModifiers <a class="code" href="class_qwt_magnifier.html#a479fca5465debe4c4d538bd350a7f182">QwtMagnifier::wheelModifiers</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;wheelModifiers;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;}</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160; </div>
<div class="line"><a name="l00179"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ada5dac479dc1e69c04760bb7dc197ac9">  179</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#ada5dac479dc1e69c04760bb7dc197ac9">QwtMagnifier::setMouseFactor</a>( <span class="keywordtype">double</span> factor )</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;{</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    m_data-&gt;mouseFactor = factor;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;}</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a282d3c040136ad97586ac73c37151508">  188</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#a282d3c040136ad97586ac73c37151508">QwtMagnifier::mouseFactor</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;mouseFactor;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;}</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160; </div>
<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ad814a5d9cb227d6fb56f8289dffe597c">  202</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#ad814a5d9cb227d6fb56f8289dffe597c">QwtMagnifier::setMouseButton</a>(</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    Qt::MouseButton button, Qt::KeyboardModifiers modifiers )</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;{</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    m_data-&gt;mouseButton = button;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    m_data-&gt;mouseButtonModifiers = modifiers;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;}</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a8793ae263bf2c96db8eb7d2942f01974">  210</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a8793ae263bf2c96db8eb7d2942f01974">QwtMagnifier::getMouseButton</a>(</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    Qt::MouseButton&amp; button, Qt::KeyboardModifiers&amp; modifiers )<span class="keyword"> const</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    button = m_data-&gt;mouseButton;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    modifiers = m_data-&gt;mouseButtonModifiers;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;}</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160; </div>
<div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ac079b44e124fdaba1d894ef519bc4e4f">  228</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#ac079b44e124fdaba1d894ef519bc4e4f">QwtMagnifier::setKeyFactor</a>( <span class="keywordtype">double</span> factor )</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;{</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    m_data-&gt;keyFactor = factor;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;}</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160; </div>
<div class="line"><a name="l00237"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ae29e88684303d3bf587e9b5338267111">  237</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_magnifier.html#ae29e88684303d3bf587e9b5338267111">QwtMagnifier::keyFactor</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <span class="keywordflow">return</span> m_data-&gt;keyFactor;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;}</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160; </div>
<div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a004d9e770ed745bbcb5dcdb7a7ecc0a9">  250</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a004d9e770ed745bbcb5dcdb7a7ecc0a9">QwtMagnifier::setZoomInKey</a>( <span class="keywordtype">int</span> key,</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;    Qt::KeyboardModifiers modifiers )</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;{</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    m_data-&gt;zoomInKey = key;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    m_data-&gt;zoomInKeyModifiers = modifiers;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;}</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160; </div>
<div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a0df893ea54dbb2a1967248740a1db84f">  265</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a0df893ea54dbb2a1967248740a1db84f">QwtMagnifier::getZoomInKey</a>( <span class="keywordtype">int</span>&amp; key,</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    Qt::KeyboardModifiers&amp; modifiers )<span class="keyword"> const</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    key = m_data-&gt;zoomInKey;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    modifiers = m_data-&gt;zoomInKeyModifiers;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;}</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; </div>
<div class="line"><a name="l00280"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a095a8cc622175fafc5b3cc6eb274af07">  280</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a095a8cc622175fafc5b3cc6eb274af07">QwtMagnifier::setZoomOutKey</a>( <span class="keywordtype">int</span> key,</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    Qt::KeyboardModifiers modifiers )</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;{</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    m_data-&gt;zoomOutKey = key;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    m_data-&gt;zoomOutKeyModifiers = modifiers;</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;}</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160; </div>
<div class="line"><a name="l00295"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#ad1192dfc87ec7b451d3dfa982cc0e602">  295</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#ad1192dfc87ec7b451d3dfa982cc0e602">QwtMagnifier::getZoomOutKey</a>( <span class="keywordtype">int</span>&amp; key,</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    Qt::KeyboardModifiers&amp; modifiers )<span class="keyword"> const</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    key = m_data-&gt;zoomOutKey;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    modifiers = m_data-&gt;zoomOutKeyModifiers;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;}</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#af90d8c4b5915635957b636d502611740">  317</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="class_qwt_magnifier.html#af90d8c4b5915635957b636d502611740">QwtMagnifier::eventFilter</a>( QObject* <span class="keywordtype">object</span>, QEvent* event )</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;{</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    <span class="keywordflow">if</span> ( <span class="keywordtype">object</span> &amp;&amp; <span class="keywordtype">object</span> == parent() )</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    {</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        <span class="keywordflow">switch</span> ( event-&gt;type() )</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        {</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;            <span class="keywordflow">case</span> QEvent::MouseButtonPress:</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;            {</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;                <a class="code" href="class_qwt_magnifier.html#a5930b3ec00ae99883f36cf8bf568cbf7">widgetMousePressEvent</a>( <span class="keyword">static_cast&lt;</span> QMouseEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;            }</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;            <span class="keywordflow">case</span> QEvent::MouseMove:</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;            {</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;                <a class="code" href="class_qwt_magnifier.html#a4eb68b98b063cc14b7839f02f8671dfc">widgetMouseMoveEvent</a>( <span class="keyword">static_cast&lt;</span> QMouseEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;            }</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;            <span class="keywordflow">case</span> QEvent::MouseButtonRelease:</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            {</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;                <a class="code" href="class_qwt_magnifier.html#aa7cc31995444ca8dd8412b8a6dab7b93">widgetMouseReleaseEvent</a>( <span class="keyword">static_cast&lt;</span> QMouseEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;            }</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;            <span class="keywordflow">case</span> QEvent::Wheel:</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            {</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;                <a class="code" href="class_qwt_magnifier.html#a236762870830cc0621411c173472392b">widgetWheelEvent</a>( <span class="keyword">static_cast&lt;</span> QWheelEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            }</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;            <span class="keywordflow">case</span> QEvent::KeyPress:</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;            {</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;                <a class="code" href="class_qwt_magnifier.html#a382cec084a2bfc0610ca500121205f04">widgetKeyPressEvent</a>( <span class="keyword">static_cast&lt;</span> QKeyEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;            }</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;            <span class="keywordflow">case</span> QEvent::KeyRelease:</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;            {</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;                <a class="code" href="class_qwt_magnifier.html#af84037c68c9b88263d1c27bb648cf9ff">widgetKeyReleaseEvent</a>( <span class="keyword">static_cast&lt;</span> QKeyEvent* <span class="keyword">&gt;</span>( event ) );</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;            }</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;            <span class="keywordflow">default</span>:;</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;        }</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    }</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;    <span class="keywordflow">return</span> QObject::eventFilter( <span class="keywordtype">object</span>, event );</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;}</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00365"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a5930b3ec00ae99883f36cf8bf568cbf7">  365</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a5930b3ec00ae99883f36cf8bf568cbf7">QwtMagnifier::widgetMousePressEvent</a>( QMouseEvent* mouseEvent )</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;{</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">parentWidget</a>() == NULL )</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160; </div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;    <span class="keywordflow">if</span> ( ( mouseEvent-&gt;button() != m_data-&gt;mouseButton ) ||</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        ( mouseEvent-&gt;modifiers() != m_data-&gt;mouseButtonModifiers ) )</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;    {</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;    }</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160; </div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    m_data-&gt;hasMouseTracking = <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">parentWidget</a>()-&gt;hasMouseTracking();</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160; </div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;    <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">parentWidget</a>()-&gt;setMouseTracking( <span class="keyword">true</span> );</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    m_data-&gt;mousePos = mouseEvent-&gt;pos();</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;    m_data-&gt;mousePressed = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;}</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160; </div>
<div class="line"><a name="l00390"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#aa7cc31995444ca8dd8412b8a6dab7b93">  390</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#aa7cc31995444ca8dd8412b8a6dab7b93">QwtMagnifier::widgetMouseReleaseEvent</a>( QMouseEvent* mouseEvent )</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;{</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    Q_UNUSED( mouseEvent );</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160; </div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;mousePressed &amp;&amp; <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">parentWidget</a>() )</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    {</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        m_data-&gt;mousePressed = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">parentWidget</a>()-&gt;setMouseTracking( m_data-&gt;hasMouseTracking );</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    }</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;}</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160; </div>
<div class="line"><a name="l00407"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a4eb68b98b063cc14b7839f02f8671dfc">  407</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a4eb68b98b063cc14b7839f02f8671dfc">QwtMagnifier::widgetMouseMoveEvent</a>( QMouseEvent* mouseEvent )</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;{</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    <span class="keywordflow">if</span> ( !m_data-&gt;mousePressed )</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160; </div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> dy = mouseEvent-&gt;pos().y() - m_data-&gt;mousePos.y();</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    <span class="keywordflow">if</span> ( dy != 0 )</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    {</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        <span class="keywordtype">double</span> f = m_data-&gt;mouseFactor;</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;        <span class="keywordflow">if</span> ( dy &lt; 0 )</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;            f = 1 / f;</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160; </div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <a class="code" href="class_qwt_magnifier.html#a5c3d5bda10412a50bd403afe84e2ccee">rescale</a>( f );</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    }</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160; </div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    m_data-&gt;mousePos = mouseEvent-&gt;pos();</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;}</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160; </div>
<div class="line"><a name="l00431"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a236762870830cc0621411c173472392b">  431</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a236762870830cc0621411c173472392b">QwtMagnifier::widgetWheelEvent</a>( QWheelEvent* wheelEvent )</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;{</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;    <span class="keywordflow">if</span> ( wheelEvent-&gt;modifiers() != m_data-&gt;wheelModifiers )</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    {</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;    }</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160; </div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;    <span class="keywordflow">if</span> ( m_data-&gt;wheelFactor != 0.0 )</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    {</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;<span class="preprocessor">#if QT_VERSION &lt; 0x050000</span></div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> wheelDelta = wheelEvent-&gt;delta();</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        <span class="keyword">const</span> QPoint delta = wheelEvent-&gt;angleDelta();</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> wheelDelta = ( qAbs( delta.x() ) &gt; qAbs( delta.y() ) )</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;            ? delta.x() : delta.y();</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160; </div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;<span class="comment">            A positive delta indicates that the wheel was</span></div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;<span class="comment">            rotated forwards away from the user; a negative</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;<span class="comment">            value indicates that the wheel was rotated</span></div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;<span class="comment">            backwards toward the user.</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="comment">            Most mouse types work in steps of 15 degrees,</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;<span class="comment">            in which case the delta value is a multiple</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="comment">            of 120 (== 15 * 8).</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="keywordtype">double</span> f = std::pow( m_data-&gt;wheelFactor,</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;            qAbs( wheelDelta / 120.0 ) );</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160; </div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        <span class="keywordflow">if</span> ( wheelDelta &gt; 0 )</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;            f = 1 / f;</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160; </div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        <a class="code" href="class_qwt_magnifier.html#a5c3d5bda10412a50bd403afe84e2ccee">rescale</a>( f );</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;    }</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;}</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160; </div>
<div class="line"><a name="l00473"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a382cec084a2bfc0610ca500121205f04">  473</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#a382cec084a2bfc0610ca500121205f04">QwtMagnifier::widgetKeyPressEvent</a>( QKeyEvent* keyEvent )</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;{</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;    <span class="keywordflow">if</span> ( keyEvent-&gt;key() == m_data-&gt;zoomInKey &amp;&amp;</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        keyEvent-&gt;modifiers() == m_data-&gt;zoomInKeyModifiers )</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;    {</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;        <a class="code" href="class_qwt_magnifier.html#a5c3d5bda10412a50bd403afe84e2ccee">rescale</a>( m_data-&gt;keyFactor );</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;    }</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;    <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( keyEvent-&gt;key() == m_data-&gt;zoomOutKey &amp;&amp;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        keyEvent-&gt;modifiers() == m_data-&gt;zoomOutKeyModifiers )</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;    {</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;        <a class="code" href="class_qwt_magnifier.html#a5c3d5bda10412a50bd403afe84e2ccee">rescale</a>( 1.0 / m_data-&gt;keyFactor );</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    }</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;}</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160; </div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#af84037c68c9b88263d1c27bb648cf9ff">  493</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_magnifier.html#af84037c68c9b88263d1c27bb648cf9ff">QwtMagnifier::widgetKeyReleaseEvent</a>( QKeyEvent* keyEvent )</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;{</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;    Q_UNUSED( keyEvent );</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;}</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160; </div>
<div class="line"><a name="l00499"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">  499</a></span>&#160;QWidget* <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">QwtMagnifier::parentWidget</a>()</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;{</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keywordflow">return</span> qobject_cast&lt; QWidget* &gt;( parent() );</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;}</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160; </div>
<div class="line"><a name="l00505"></a><span class="lineno"><a class="line" href="class_qwt_magnifier.html#acbb443e8e38f049b937a8b00fcf05869">  505</a></span>&#160;<span class="keyword">const</span> QWidget* <a class="code" href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">QwtMagnifier::parentWidget</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;    <span class="keywordflow">return</span> qobject_cast&lt; const QWidget* &gt;( parent() );</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;}</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160; </div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;<span class="preprocessor">#if QWT_MOC_INCLUDE</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="preprocessor">#include &quot;moc_qwt_magnifier.cpp&quot;</span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a004d9e770ed745bbcb5dcdb7a7ecc0a9"><div class="ttname"><a href="class_qwt_magnifier.html#a004d9e770ed745bbcb5dcdb7a7ecc0a9">QwtMagnifier::setZoomInKey</a></div><div class="ttdeci">void setZoomInKey(int key, Qt::KeyboardModifiers=Qt::NoModifier)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00250">qwt_magnifier.cpp:250</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a03d892c58039fc864a452b7c636a1df7"><div class="ttname"><a href="class_qwt_magnifier.html#a03d892c58039fc864a452b7c636a1df7">QwtMagnifier::setEnabled</a></div><div class="ttdeci">void setEnabled(bool)</div><div class="ttdoc">En/disable the magnifier.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00092">qwt_magnifier.cpp:92</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a095a8cc622175fafc5b3cc6eb274af07"><div class="ttname"><a href="class_qwt_magnifier.html#a095a8cc622175fafc5b3cc6eb274af07">QwtMagnifier::setZoomOutKey</a></div><div class="ttdeci">void setZoomOutKey(int key, Qt::KeyboardModifiers=Qt::NoModifier)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00280">qwt_magnifier.cpp:280</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a0df893ea54dbb2a1967248740a1db84f"><div class="ttname"><a href="class_qwt_magnifier.html#a0df893ea54dbb2a1967248740a1db84f">QwtMagnifier::getZoomInKey</a></div><div class="ttdeci">void getZoomInKey(int &amp;key, Qt::KeyboardModifiers &amp;) const</div><div class="ttdoc">Retrieve the settings of the zoom in key.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00265">qwt_magnifier.cpp:265</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a236762870830cc0621411c173472392b"><div class="ttname"><a href="class_qwt_magnifier.html#a236762870830cc0621411c173472392b">QwtMagnifier::widgetWheelEvent</a></div><div class="ttdeci">virtual void widgetWheelEvent(QWheelEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00431">qwt_magnifier.cpp:431</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a282d3c040136ad97586ac73c37151508"><div class="ttname"><a href="class_qwt_magnifier.html#a282d3c040136ad97586ac73c37151508">QwtMagnifier::mouseFactor</a></div><div class="ttdeci">double mouseFactor() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00188">qwt_magnifier.cpp:188</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a382cec084a2bfc0610ca500121205f04"><div class="ttname"><a href="class_qwt_magnifier.html#a382cec084a2bfc0610ca500121205f04">QwtMagnifier::widgetKeyPressEvent</a></div><div class="ttdeci">virtual void widgetKeyPressEvent(QKeyEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00473">qwt_magnifier.cpp:473</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a479fca5465debe4c4d538bd350a7f182"><div class="ttname"><a href="class_qwt_magnifier.html#a479fca5465debe4c4d538bd350a7f182">QwtMagnifier::wheelModifiers</a></div><div class="ttdeci">Qt::KeyboardModifiers wheelModifiers() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00164">qwt_magnifier.cpp:164</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a4eb68b98b063cc14b7839f02f8671dfc"><div class="ttname"><a href="class_qwt_magnifier.html#a4eb68b98b063cc14b7839f02f8671dfc">QwtMagnifier::widgetMouseMoveEvent</a></div><div class="ttdeci">virtual void widgetMouseMoveEvent(QMouseEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00407">qwt_magnifier.cpp:407</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a56b7ad2366a7f908c38bc2a994acde16"><div class="ttname"><a href="class_qwt_magnifier.html#a56b7ad2366a7f908c38bc2a994acde16">QwtMagnifier::parentWidget</a></div><div class="ttdeci">QWidget * parentWidget()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00499">qwt_magnifier.cpp:499</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a5930b3ec00ae99883f36cf8bf568cbf7"><div class="ttname"><a href="class_qwt_magnifier.html#a5930b3ec00ae99883f36cf8bf568cbf7">QwtMagnifier::widgetMousePressEvent</a></div><div class="ttdeci">virtual void widgetMousePressEvent(QMouseEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00365">qwt_magnifier.cpp:365</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a5c3d5bda10412a50bd403afe84e2ccee"><div class="ttname"><a href="class_qwt_magnifier.html#a5c3d5bda10412a50bd403afe84e2ccee">QwtMagnifier::rescale</a></div><div class="ttdeci">virtual void rescale(double factor)=0</div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a64f88257b2432d21f5fc62e7fd9c0fde"><div class="ttname"><a href="class_qwt_magnifier.html#a64f88257b2432d21f5fc62e7fd9c0fde">QwtMagnifier::isEnabled</a></div><div class="ttdeci">bool isEnabled() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00113">qwt_magnifier.cpp:113</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a8793ae263bf2c96db8eb7d2942f01974"><div class="ttname"><a href="class_qwt_magnifier.html#a8793ae263bf2c96db8eb7d2942f01974">QwtMagnifier::getMouseButton</a></div><div class="ttdeci">void getMouseButton(Qt::MouseButton &amp;, Qt::KeyboardModifiers &amp;) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00210">qwt_magnifier.cpp:210</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_a9bf2df5d0a0087e967c8674618466da2"><div class="ttname"><a href="class_qwt_magnifier.html#a9bf2df5d0a0087e967c8674618466da2">QwtMagnifier::wheelFactor</a></div><div class="ttdeci">double wheelFactor() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00143">qwt_magnifier.cpp:143</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_aa11b927c72e0421570a137f0fa1cfb7b"><div class="ttname"><a href="class_qwt_magnifier.html#aa11b927c72e0421570a137f0fa1cfb7b">QwtMagnifier::QwtMagnifier</a></div><div class="ttdeci">QwtMagnifier(QWidget *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00063">qwt_magnifier.cpp:63</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_aa7cc31995444ca8dd8412b8a6dab7b93"><div class="ttname"><a href="class_qwt_magnifier.html#aa7cc31995444ca8dd8412b8a6dab7b93">QwtMagnifier::widgetMouseReleaseEvent</a></div><div class="ttdeci">virtual void widgetMouseReleaseEvent(QMouseEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00390">qwt_magnifier.cpp:390</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_aadfc853d8619b43b21564d8d5fe50093"><div class="ttname"><a href="class_qwt_magnifier.html#aadfc853d8619b43b21564d8d5fe50093">QwtMagnifier::setWheelModifiers</a></div><div class="ttdeci">void setWheelModifiers(Qt::KeyboardModifiers)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00155">qwt_magnifier.cpp:155</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ac079b44e124fdaba1d894ef519bc4e4f"><div class="ttname"><a href="class_qwt_magnifier.html#ac079b44e124fdaba1d894ef519bc4e4f">QwtMagnifier::setKeyFactor</a></div><div class="ttdeci">void setKeyFactor(double)</div><div class="ttdoc">Change the key factor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00228">qwt_magnifier.cpp:228</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ac18a7858407951a335399ee6969a50da"><div class="ttname"><a href="class_qwt_magnifier.html#ac18a7858407951a335399ee6969a50da">QwtMagnifier::~QwtMagnifier</a></div><div class="ttdeci">virtual ~QwtMagnifier()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00078">qwt_magnifier.cpp:78</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ad1192dfc87ec7b451d3dfa982cc0e602"><div class="ttname"><a href="class_qwt_magnifier.html#ad1192dfc87ec7b451d3dfa982cc0e602">QwtMagnifier::getZoomOutKey</a></div><div class="ttdeci">void getZoomOutKey(int &amp;key, Qt::KeyboardModifiers &amp;) const</div><div class="ttdoc">Retrieve the settings of the zoom out key.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00295">qwt_magnifier.cpp:295</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ad814a5d9cb227d6fb56f8289dffe597c"><div class="ttname"><a href="class_qwt_magnifier.html#ad814a5d9cb227d6fb56f8289dffe597c">QwtMagnifier::setMouseButton</a></div><div class="ttdeci">void setMouseButton(Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00202">qwt_magnifier.cpp:202</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ada5dac479dc1e69c04760bb7dc197ac9"><div class="ttname"><a href="class_qwt_magnifier.html#ada5dac479dc1e69c04760bb7dc197ac9">QwtMagnifier::setMouseFactor</a></div><div class="ttdeci">void setMouseFactor(double)</div><div class="ttdoc">Change the mouse factor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00179">qwt_magnifier.cpp:179</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ae29e88684303d3bf587e9b5338267111"><div class="ttname"><a href="class_qwt_magnifier.html#ae29e88684303d3bf587e9b5338267111">QwtMagnifier::keyFactor</a></div><div class="ttdeci">double keyFactor() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00237">qwt_magnifier.cpp:237</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_ae3a33ab8776ed2122fecc821a32bb36a"><div class="ttname"><a href="class_qwt_magnifier.html#ae3a33ab8776ed2122fecc821a32bb36a">QwtMagnifier::setWheelFactor</a></div><div class="ttdeci">void setWheelFactor(double)</div><div class="ttdoc">Change the wheel factor.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00134">qwt_magnifier.cpp:134</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_af84037c68c9b88263d1c27bb648cf9ff"><div class="ttname"><a href="class_qwt_magnifier.html#af84037c68c9b88263d1c27bb648cf9ff">QwtMagnifier::widgetKeyReleaseEvent</a></div><div class="ttdeci">virtual void widgetKeyReleaseEvent(QKeyEvent *)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00493">qwt_magnifier.cpp:493</a></div></div>
<div class="ttc" id="aclass_qwt_magnifier_html_af90d8c4b5915635957b636d502611740"><div class="ttname"><a href="class_qwt_magnifier.html#af90d8c4b5915635957b636d502611740">QwtMagnifier::eventFilter</a></div><div class="ttdeci">virtual bool eventFilter(QObject *, QEvent *) override</div><div class="ttdoc">Event filter.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__magnifier_8cpp_source.html#l00317">qwt_magnifier.cpp:317</a></div></div>
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